First off, I love what Nolan did with Batman. Love it. I think it was an excellent choice made at the right time. They had an amazing crew and showed people that comic films are not all just for kids. This was dark, gritty and dirty. A perfect crime film in many ways. To prove that, go back and swap out Batman with some regular joe, or Joker with some sadistic nutcase sans makeup. Same story, same events, just take away the costumes. It's still an amazing film, but now it's a crime film, not a comic book movie. With the exception of a few elements in the last film, all three you can do this with. That's what Nolan wanted to do, and he did a fantastic job.
I think Ben is a good choice. Way out of left field, but it makes sense. Plus, I think it's time he got out of movie jail. His directing skills are amazing, way better than most career directors out there. His acting, that's up for debate. I can see him doing this. I don't want to look ingnorant, but how hard is it to play Batman? He has the look (built, strong chin) and he can be monotone. He can yell. Okay, I'm really downplaying that, but seriously, the trick for Affleck is being a good Bruce Wayne and getting good material.
Ben has done action films, he knows the ropes. I am willing to bet WB are going to go for something a tad bit lighter in tone this go round. They want to be Marvel and they want to build up to Justice Leauge. How do they do that? Not be as brooding. Just like in the comic book world, where we have many types of takes on Batman all ranging from deadly serious to more family friendly, I think we are going to be seeing a more lighter take akin to the 90's animated series. You have a good balance of darkness with Batman, and more of a Bond type (hell, lets just say it, a Keton Wayne) feel with Bruce Wayne where it's going to be more casual, going parties, dating the ladies and running his company.
Ben can do the smoozing playboy. That's what people see him as, so why not play to it.
Also, a few things to remember, when Keton was tapped to play Batman, people where pissed. No one thought he could do it, and for my money, he's been the best out of the lot. I think Bale did an amazing job, but lets face it, he got more flac for his portrayal that he did praise. Yes, the Nolan films got a heap of praise, but where was it aimed at? The story, the direction, the realisim, Heath Ledger's Joker, Michael Caine, all the other actors but Bale. People loved him in the first film, but after that, even though I'm sure they still loved him, what did you hear? Constant griping over the Batman voice. The deep, gravely voice no one could understand. Remember?
I don't want to knock on Bale, but I'm just putting out the facts. He did a great job, so did Keton. The others are, well, it's preference. My wife is a Val fan. Face it, Batman is the new Bond. I think Ben will do just fine.
That said, on a side note, I wonder if WB will ever have the balls to do something really daring, like passing the mantle on to another character. I thought for sure they were setting up JGL to take over at the end of Dark Knight Rises.